DEVICE FOR GAS CLEANING Russian patent published in 2002 - IPC

FIELD: cleaning of gas flow from solid and liquid impurities; applicable in various industries such as oil producing, power, gas producing, food and other industries. SUBSTANCE: device consists of successively connected the first and second sections whose working and removable members are built in external cylindrical body with transverse partitions separating successively cavities of the first and second sections along flow of gas to be cleaned. Inlet into the first section presenting phase separator of inertial-gravitation type is made from body end through deflector. The second section - separator of straight-flow centrifugal type consisting of at least one separation tube with swirler at its inlet, channel for discharge of trapped impurities at outlet, and channel of bypassing of gas from intertube cavity. Cavities of the first and second sections, flow lower side of body, are communicated with bins whose outlets are provided with dump valve. Each separation tube has a channel for gas bypass so that gas bypass from intertube cavity back to tube inlet is effected through holes in tube well to zone of reduced pressure at outlet of swirler in gap formed by circular deflector and internal wall of tube. Located at outlet of said tube is branch pipe for discharge of cleaned gas. Branch pipe diameter is equal to diameter of said tube. Branch pipe forms catching circular slot together with tube end for discharge of trapped impurities. Slot is embraced by branch pipe perforated end and internal edges of tube and branch pipe are made at an acute angle relative to direction of flow. Areas of flow sections of circular slot and through holes in tube wall are equal to each other and amount to value equalling 5-10% of area of tube flow section. Minimal size of cross-section dimension of slot shall be at least equal to 2.5-3.0 maximum diameters of solid particles coming from the first section to the second one. EFFECT: higher reliability of device, its technological effectiveness, maintainability with preserved high efficiency of gas cleaning. 6 cl, 4 dwg